Choosing Between Radial or Bias Ply Tires for Boat Trailer  

The B78-13 tires you mention convert to metric size 175/80-13. The 175/80-13 tires are available in three load ratings. B: 1100 lb at 35 psi C: 1360 lb at 50 psi D: 1610 lb at 65 psi You would choose the load rating based on the capacity of your…

Our selection of trailer tires in the 205/75-14 size with a D load range is limited to Kenda Karrie and Westlake. These both are considered higher quality radial options but the best one for your application will come down to your particular speed…

We do carry the tire size of ST185/80D13 mounted on wheels so we do have a suitable spare. The part #AM3S334 is that tire size mounted on a galvanized wheel with a 5 on 4-1/2 inch bolt pattern. The D in the size instead of the R means it's a…

A trailer tire size 175/80-13 will replace either an A78-13 or B78-13 trailer tire. A 175/80-13 is going to have 3 load ratings: B at 1,100 pounds at 35 psi, C at 1,360 pounds at 50 psi, and D at 1,610 pounds at 65 psi. This size will have a…

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

When installing a center cap like #319EZ, it will actually go in through the back of the wheel before you mount the wheel to the hub. The wider diameter at the base makes a little lip so that the cap does not just fall through the pilot hole during…

Karrier and Loadstar are two different brand names used by Kenda. There's no difference in quality or function between the two brand names. For a ST175/80-13 Radial trailer tire in load range D, I'd recommend part #AM10210 if you're…

Yes, as long as the actual tire size is the same, a radial ply tire like the Kenda ST185/80R13 #AM10208 will fit onto the wheel just the same as the bias alternative #AM1ST79 it's replacing. Radial trailer tires differ from bias models due to the…

The R and the D in a trailer tire size stand for radial and bias-ply. A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability, and tread wear. A radial tire will normally run cooler than a bias ply tire,…

The size 175/80-13 is the closest trailer tire size to your 165/80R13 and would work just as well. It fits rims that are between 4-1/2 inch and 5-1/2 inches wide. I recommend the Karrier ST175/80R13 Radial Trailer Tire - Load Range D item #AM10210.…

You would want to use 2, 1/2 inch diameter bolts that are 4 inches in length. I pulled a Fulton Fas-Lok Coupler #F343000301 and checked the installation instructions to confirm the bolt recommendations.

I went out to the warehouse and pulled a Trailer Coupler Grip Handle, #DL13350, to inspect the handle. The handle is plastic. It is hollow inside . It cannot be pushed around the bend in the handle, so it cannot come off that way. On the other end…